Merge pull request #755 from dingpinglv/Iss1643_CCFileUtils

Fixed #1643 implement fullPathForFilename,loadFilenameLookup etc.. for CCFileUtils.js
Update changlog and tests commit ID.
Merge pull request #756 from linshun/iss1665_v2.1.1

Update changlog and tests commit ID.
fixed BitmapFontMultiLineAlignment test case
Merge pull request #757 from ShengxiangChen/spriteBug

fixed BitmapFontMultiLineAlignment test case
tileMap test  case
Merge pull request #758 from ShengxiangChen/spriteBug

tileMap test  case
update tests commit ID
Merge pull request #759 from linshun/iss1665_v2.1.1

update tests commit ID
update samples commit ID
Merge pull request #760 from linshun/iss1665_v2.1.1

update samples commit ID
fixed #1643 fixed bug for indexOf to lastIndexOf